湿陷性黄土超深基础的施工安全管理研究
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摘要
经济的不断发展,推动了电网建设的飞速发展。然而,随着电压等级的不断刷新,电网建设难度随之提高,超深基础不断增加,输电线路工程施工难度加大。基于世界上第一条电压等级最高的输电线路(吉泉线甘9标段),对超深基础的施工安全管理进行研究。吉泉线(甘9标段)位于陇东地区,在基础施工阶段,98%的基础采取人工挖孔基础,平均基础深度15 m,地质条件为湿陷性黄土地质。人工开挖存在很大的安全隐患,遇水极易坍塌,施工环境复杂。因此,探讨采用机械洛阳铲开挖、旋挖钻机开挖、商品混凝土等全机械化开挖施工方案,对超深基础进行施工,以期为超深基础的施工安全管理提供参考。
The continuous development of economy has promoted the rapid development of power grid construction. However,with the continuous refreshing of voltage level,the difficulty of power grid construction increases,the superdeep foundation increases,and the difficulty of transmission line construction increases. Based on the first transmission line with the highest voltage level in the world(Gan 9 section of Jiquan line),the construction safety management of ultra-deep foundation is studied. Jiquan Line(Gan 9 Bid Section) is located in Longdong area. In the stage of foundation construction,98% of the foundations are based on manual excavation,with an average depth of 15 m. The geological condition is collapsible loess. Manual excavation has great potential safety hazards. It is easy to collapse in case of water,and the construction environment is complex. In order to provide reference for the construction safety management of ultra-deep foundation,the construction scheme of fully mechanized excavation such as mechanical Luoyang shovel excavation,rotary drilling rig excavation and commercial concrete excavation is discussed.
The continuous development of economy has promoted the rapid development of power grid construction. However,with the continuous refreshing of voltage level,the difficulty of power grid construction increases,the superdeep foundation increases,and the difficulty of transmission line construction increases. Based on the first transmission line with the highest voltage level in the world(Gan 9 section of Jiquan line),the construction safety management of ultra-deep foundation is studied. Jiquan Line(Gan 9 Bid Section) is located in Longdong area. In the stage of foundation construction,98% of the foundations are based on manual excavation,with an average depth of 15 m. The geological condition is collapsible loess. Manual excavation has great potential safety hazards. It is easy to collapse in case of water,and the construction environment is complex. In order to provide reference for the construction safety management of ultra-deep foundation,the construction scheme of fully mechanized excavation such as mechanical Luoyang shovel excavation,rotary drilling rig excavation and commercial concrete excavation is discussed.
引文
[1]徐至钧.新编建筑地基处理工程手册[M].北京:中国建筑工业出版社,2009.
[2]刘卫东,裴章勤.湿陷性黄土地基处理[M].北京:中国铁道出版社,2009.
[3]罗宇生,王继唐.湿陷性黄土地基[M].北京:中国建筑工业出版社,2010.
[4]薛尚青.输电线路全过程机械化施工建设管理[J].科技与创新,2016,(17):67.
[5]戴如章.输电线路工程全过程机械化施工的应用[J].建筑工程技术宇设计,2015,(9):1149.
[2]刘卫东,裴章勤.湿陷性黄土地基处理[M].北京:中国铁道出版社,2009.
[3]罗宇生,王继唐.湿陷性黄土地基[M].北京:中国建筑工业出版社,2010.
[4]薛尚青.输电线路全过程机械化施工建设管理[J].科技与创新,2016,(17):67.
[5]戴如章.输电线路工程全过程机械化施工的应用[J].建筑工程技术宇设计,2015,(9):1149.